Aids to Health – Notes
Micro Organisms: Friend and Foe – Dealing with Harmful Micro Organisms
Micro organisms are not visible to the naked eye.
Some microbes, called pathogens, cause serious diseases like dysentery, malaria, cholera, typhoid, polio and many others.
Microbes are used as antibiotic and vaccinating agents medicinally.
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ICSE Class 9th Biology 20 - Aids to Health - Notes
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